//
//  StatusCell.swift
//  Weibo
//  Created by 付启刚 on 15/12/21.
//  Copyright © 2015年 faq. All rights reserved.
//
import UIKit
import SnapKit
class StatusCell: UITableViewCell {
    var bottomViewTopConstraints:Constraint?
    var status:Status?{
        didSet{
        //给顶部视图 设置模型数据
            topView.status=status
            //设置转发微博的数据类型
            //卸载掉顶部约束
            bottomViewTopConstraints?.uninstall()
             //需要根据数模型 提供的数据 判断是否显示转发微博视图
            if let retweetedStatus=status?.retweeted_status{
            //一定是转发微博
                //1.修改约束
                bottomView.snp_updateConstraints(closure: { (make) -> Void in
                    self.bottomViewTopConstraints=make.top.equalTo(retweetedView.snp_bottom).constraint
                })
                 //设置转发微博的数据源
                retweetedView.retweetedStatus=retweetedStatus
                //显示转发微博
                retweetedView.hidden=false
            }else{
            //一定原创微博
                bottomView.snp_updateConstraints(closure: { (make) -> Void in
                    self.bottomViewTopConstraints=make.top.equalTo(topView.snp_bottom).constraint
                })
                //隐藏转发微博
                retweetedView.hidden=true
            }
        }
    }
    //cell入口
    override init(style: UITableViewCellStyle, reuseIdentifier: String?) {
        super.init(style: style, reuseIdentifier: reuseIdentifier)
        setupUI()
        selectionStyle = .None
    }
    required init?(coder aDecoder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
    //自定义cell
    private func setupUI(){
        //使用contentView   添加子视图
        contentView.addSubview(topView)
        contentView.addSubview(bottomView)
        contentView.addSubview(retweetedView)
        
        //设置顶部约束
        topView.snp_makeConstraints { (make) -> Void in
            make.top.left.right.equalTo(contentView)
        }
        //转发微博约束
        retweetedView.snp_makeConstraints { (make) -> Void in
            make.left.right.equalTo(contentView)
            make.top.equalTo(topView.snp_bottom)
        }
        //底部约束
        bottomView.snp_makeConstraints { (make) -> Void in
            make.left.right.equalTo(self)
         self.bottomViewTopConstraints = make.top.equalTo(retweetedView.snp_bottom).constraint
            make.height.equalTo(40)
            
        }
        //给contentView设置约束  非常关键的一点
        contentView.snp_makeConstraints { (make) -> Void in
            make.top.left.right.equalTo(self)
            make.bottom.equalTo(bottomView.snp_bottom)
        }
    }
    // 懒加载子视图
    //顶部视图
    private lazy var topView: StatusCellTopView = StatusCellTopView()
    //转发微博
    private lazy var retweetedView: StatusRetweetedView = StatusRetweetedView()
    //底部视图
    private lazy var bottomView: StatusCellBottomView = StatusCellBottomView()
}

